RAM 5500 Chassis Cab Truck 2WD L6-6.7L DSL Turbo (2008)
Thermostat: Service and Repair
Engine Coolant Thermostat - Removal
6.7L DIESEL ENGINE
WARNING: Do not loosen the radiator draincock with the system hot and pressurized. Serious burns from the coolant can occur.
1. Disconnect the battery negative cables.
2. Remove vent plug near EGR cooler.
3. Drain cooling system until coolant level is below thermostat See: Service and Repair .
4. Disconnect exhaust gas pressure sensor electrical connector (3).
5. Remove exhaust pressure tube (4) from thermostat housing.
6. Remove EGR cooler cross over tube (1).
7. Remove radiator hose clamp and hose from thermostat housing (1).
8. Remove heat shield.
9. Remove the three water outlet-to-cylinder head bolts (5) and remove the water outlet connector.
10. Clean the mating surfaces of the thermostat housing (1) and clean the thermostat seat groove at the top of the thermostat housing (1).
